My suggestions:
For translations, only approve translations if they were merged, proofread or were upvoted/endorsed by project owners.
Your suggestion "[Tutorials] should only cover the technical aspects of the project" is very subjective and may lead to 90% of tutorials getting rejected. It is not clear what you mean by "technical aspect" and mods themselves may have their own interpretation of it. I suggest you drop this idea and try to find something that would be more specifically defined.
Same as 2 for video tutorials. Drop the technical aspect part.
Different words, same thoughts: upvoted of course! :-)
The technicalities aren't important. Dealing with this (credits for @wehmoen for this) IS important! This is not what Utopian is intended for.
We need to solve this